Bugzilla is a Web-based bug-tracking system used by a large number of
software projects. The following security issue has been discovered
* A specially crafted bug summary could trigger XSS in dependency graphs.
All affected installations are encouraged to upgrade as soon as
Class: Cross-Site Scripting
Versions: Bugzilla 2.16rc1 to 4.4.11, 4.5.1 to 5.0.2
Fixed In: 4.4.12, 5.0.3
Description: Due to an incorrect parsing of the image map generated by the
dot script, a specially crafted bug summary could trigger XSS
in dependency graphs.
References: https://bugzilla.mozilla.org/show_bug.cgi?id=1253263 CVE Number: CVE-2016-2803
The fix for this issue is included in the 4.4.12 and 5.0.3
releases. Upgrading to a release with the relevant fix will
protect your installation from possible exploits of this issue.
If you are unable to upgrade but would like to patch just the security
vulnerability, there are patches available for the issue at the
Full release downloads, patches to upgrade Bugzilla from previous
versions, and git upgrade instructions are available at: